nerdia.net

About Stefan Helander

I was born a nerd! As a child I was fond of fiddling with all kind of thechnical stuff, discovering how things work and often fixing them. As a 6 year old I fixed my grandmothers 220 volts wiring.

The interest in technical stuff grown even bigger in the teenage years where I got my amateur radio license and developed a keen interest in computers.

Today I am proud to be a nerd. It is a part of my profession.

To all of you nerds and geeks out there - remember that nerd is the new sexy! :)

Entries by Stefan Helander

Unwanted code is displayed on Joomla articles when caching is enabled

February 24, 2016/0 Comments/in Joomla/by Stefan Helander

Unwanted code, like below, is displayed on articles when System -> Global settings -> Cache is set to ON (both for conservative and progressive caching). The first time the article is loaded it looks ok but when reloading it garbage code like below is displayed. System is Joomla 3.4.8. Example of unwanted code displayed: {idkey=7001b0[url=http%3A%2F%2Fsomedomain.com%2Fom-site][title=Om+oss][desc=+%7Bloadposition+undermeny_4_text%7D+%7Bloadposition+undermeny_4_bild%7D+]}{cmp_start […]

osticket error: IMAP doesn’t exist. PHP must be compiled with IMAP enabled.

February 8, 2016/0 Comments/in Linux/FreeBSD/by Stefan Helander

On Ubuntu 14.04 LTS: apt-get install php5-imap php5enmod imap service apache2 reload

Telldus net and NEXA PER-1500 remote controlled switch

February 2, 2016/0 Comments/in Home automation/by Stefan Helander

The NEXA PER-1500 remote controlled switch works fine with Telldus net. This unit does not have a learn button. Instead it goes into learn mode for about 5 seconds when power is applied and that is indicated by the LED blinking. To add the NEXA to to Telldus Live: The NEXA PER-1500 should be disconnected […]

Joomla 1.5 PHP fatal error allowed memory size exhausted in libraries/joomla/error/exception.php [SOLUTION]

February 1, 2016/0 Comments/in Joomla/by Stefan Helander

After a site move (from one webhosting to another) the site reported error 500 internal server error. When checking the logfile the file libraries/joomla/error/exception.php reported that allowed memor size was exhausted. I tried increasing it by adjusting the php.ini settings all the way up to 2 GB without resolving the problem. This is way more than […]

Problem sending email on form submission in WordPress

January 27, 2016/0 Comments/in WordPress/by Stefan Helander

Adding a form to your WordPress website is normally done by using a plugin for it, like Contact Form 7 for example. At some hosting providers, there can be a problem for the plugin to send emails to you when someone is posting through the form. To prevent spam through forms, many hosting providers disable […]

PHP Parse error: syntax error, unexpected end of file in XXXXX.php

January 10, 2016/0 Comments/in Linux/FreeBSD, Web design, WordPress/by Stefan Helander

Check that you have spaces around curly braces, i.e. for example don’t use <?php}?> but instead use <?php } ?> If your script has been running without problems on earlier versions of PHP but you are now running PHP 5.4 or later, replace all occurrences of <? with <?php

Joomla 3.4 too many redirects (303)

December 21, 2015/0 Comments/in Joomla/by Stefan Helander

On a Joomla site currently in offline mode the front page gave us “too many redirects” error. It turned out the reason was the article connected to the home page menu item had been unpublished. By publishing the article the problem wsa solved.

Vivotek PT7137 rtsp stream to webpage using VLC plugin

December 8, 2015/0 Comments/in Hardware, Web design/by Stefan Helander

One way of getting the video from Vivotek PT7137 to a webpage is by using the VLC plugin and connect the rtsp stream. However, in current version of Chrome the VLC plugin is no longer supported. Instead it is suggested to use HTML5 to embed video, but rtsp is not supported in Chrome so it […]

CSS background-position not working on Android Mozilla

December 1, 2015/0 Comments/in Web design/by Stefan Helander

In order to position a background image inside a div I tried to use the CSS3: background-position: right 10px center; The goal was to position the background image to the right of a div container, 10px from the right edge and vertically centered. This worked fine in most browsers. However, in the Android devices using […]

How to convert a SVG (scalable vector graphics) image to PNG

November 17, 2015/0 Comments/in Photo, Web design, Windows/by Stefan Helander

This method aims at Windows users but similar methods are probably also useable in other environments. Right click on the SVG image file and select Open with Select Internet Explorer In Internet Explorer right click on the image and select Save image as In the File Format box switch from Scalable Vector Graphics (*.svg) to […]

Author Archive for: stefan

About Stefan Helander

Entries by Stefan Helander